参数资料
型号: AD7747ARUZ
厂商: Analog Devices Inc
文件页数: 8/28页
文件大小: 0K
描述: IC CONV 24BIT CAP-DGTL 16-TSSOP
标准包装: 96
类型: 电容数字转换器
分辨率(位): 24 b
数据接口: 串行
电压电源: 单电源
电源电压: 2.7 V ~ 5.25 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 管件
产品目录页面: 781 (CN2011-ZH PDF)
配用: EVAL-AD7747EBZ-ND - BOARD EVAL FOR AD7747
其它名称: Q23139198
AD7747
Rev. 0 | Page 16 of 28
CAP SETUP REGISTER
Address Pointer 0x07, Default Value 0x00
Capacitive channel setup.
Table 11. Cap Setup Register Bit Map
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
CAPEN
CAPDIFF
Default
0
Table 12.
Bit
Mnemonic
Description
7
CAPEN
CAPEN = 1 enables capacitive channel for single conversion, continuous conversion, or calibration.
6
This bit must be 0 for proper operation.
5
CAPDIFF
This bit must be set to 1 for proper operation.
4 to 0
These bits must be 0 for proper operation.
VT SETUP REGISTER
Address Pointer 0x08, Default Value 0x00
Voltage/Temperature channel setup.
Table 13. VT Setup Register Bit Map
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
VTEN
VTMD1
VTMD0
EXTREF
VTSHORT
VTCHOP
Default
0
Table 14.
Bit
Mnemonic
Description
7
VTEN
VTEN = 1 enables voltage/temperature channel for single conversion, continuous conversion, or calibration.
Voltage/temperature channel input configuration.
VTMD1
VTMD0
Channel Input
0
Internal temperature sensor
0
1
External temperature sensor diode
1
0
VDD monitor
6
5
VTMD1
VTMD0
1
External voltage input (VIN)
4
EXTREF
EXTREF = 1 selects an external reference voltage connected to REFIN(+), REFIN() for the voltage input or the
VDD monitor.
EXTREF = 0 selects the on-chip internal reference. The internal reference must be used with the internal
temperature sensor for proper operation.
3 to 2
These bits must be 0 for proper operation.
1
VTSHORT
VTSHORT = 1 internally shorts the voltage/temperature channel input for test purposes.
0
VTCHOP = 1
VTCHOP = 1 sets internal chopping on the voltage/temperature channel.
The VTCHOP bit must be set to 1 for the specified voltage/temperature channel performance.
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